James Lambert was on his way to work in February and saw some strange markings and what appeared to be stickers on several signs along Woodleaf Road. He took pictures and posted them to his Facebook ...

Graffiti—and its role in cities—has spawned countless movies, museum exhibits, books. But what about its scrappier cousin, sticker art? In the 1980s and ’90s, “sticker bombing,” also known as ...